20120994448

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{293}}^1\times {\mathrm{991}}^1$

素因数の和:1424

約数の個数: 80

約数和(自身を含む): 40359416832

約数和(自身を除く): 20238422384

約数列:

[1, 2, 4, 8, 16, 61, 71, 122, 142, 244, 284, 293, 488, 568, 586, 976, 991, 1136, 1172, 1982, 2344, 3964, 4331, 4688, 7928, 8662, 15856, 17324, 17873, 20803, 34648, 35746, 41606, 60451, 69296, 70361, 71492, 83212, 120902, 140722, 142984, 166424, 241804, 281444, 285968, 290363, 332848, 483608, 562888, 580726, 967216, 1125776, 1161452, 1268983, 2322904, 2537966, 4292021, 4645808, 5075932, 8584042, 10151864, 17168084, 17712143, 20303728, 20615773, 34336168, 35424286, 41231546, 68672336, 70848572, 82463092, 141697144, 164926184, 283394288, 329852368, 1257562153, 2515124306, 5030248612, 10060497224, 20120994448]

約数ペア:

[(1, 20120994448), (2, 10060497224), (4, 5030248612), (8, 2515124306), (16, 1257562153), (61, 329852368), (71, 283394288), (122, 164926184), (142, 141697144), (244, 82463092), (284, 70848572), (293, 68672336), (488, 41231546), (568, 35424286), (586, 34336168), (976, 20615773), (991, 20303728), (1136, 17712143), (1172, 17168084), (1982, 10151864), (2344, 8584042), (3964, 5075932), (4331, 4645808), (4688, 4292021), (7928, 2537966), (8662, 2322904), (15856, 1268983), (17324, 1161452), (17873, 1125776), (20803, 967216), (34648, 580726), (35746, 562888), (41606, 483608), (60451, 332848), (69296, 290363), (70361, 285968), (71492, 281444), (83212, 241804), (120902, 166424), (140722, 142984)]